C Primer Plus(第六版）中文版第六章12题
#include<stdio.h>
int hanshu(int m);
int main(void)
{
int k,limit,rv,j;
double sum1,sum2;
printf(“请输入次数：”);
while(scanf("%d",&limit)>=0)
{
for (k=1,sum1=0;k<=limit;k++)
sum1 += 1.0/k;
printf(“The sum1 is %f”,sum1);
for (j=1,sum2=0;j<=limit;j++)
{
rv=hanshu(j);
sum2 += rv*(1.0/j);
}
printf("\nThe sum2 is %f",sum2);
printf("\n请输入下个数：");
}
return 0;
}
int hanshu(int m)
{
int pow,i,n;
for (i=-1,pow=-1,n=1;n<=m;n++)
pow*=i;
return pow;
}